Digital Flow Meter Material: PVC Colour of Monitor Housing:Grey Pipe Connection:DN25 Inner & Outer Diameter:32 / 40mm Medium: Acid and alkali resistant liquids Flow Rate: 20 - 280L/min Frequency (Hz) = 1.16*Q, Q=L/min K Factor Setting:70 Measurement Accuracy:± 5% Repeatability:± 0.5% Max Pressure:2.0MPa Single Measurement:0.00 - 99999 Total Accumulation:0-99999999 Measurement Unit:QTS / M³ / L / GAL Wire Connection:5V Power